CN106640090A - Surface pre-grouting monitoring system of newly-built coal mine deep vertical shaft under adjacent existing mineshaft condition - Google Patents
Surface pre-grouting monitoring system of newly-built coal mine deep vertical shaft under adjacent existing mineshaft condition Download PDFInfo
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- CN106640090A CN106640090A CN201710113252.9A CN201710113252A CN106640090A CN 106640090 A CN106640090 A CN 106640090A CN 201710113252 A CN201710113252 A CN 201710113252A CN 106640090 A CN106640090 A CN 106640090A
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- deep vertical
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 73
- 239000003245 coal Substances 0.000 title abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 229910000831 Steel Inorganic materials 0.000 claims description 34
- 239000010959 steel Substances 0.000 claims description 34
- 238000007569 slipcasting Methods 0.000 claims description 23
- 239000002002 slurry Substances 0.000 claims description 15
- 238000005728 strengthening Methods 0.000 claims description 15
- 210000004911 serous fluid Anatomy 0.000 claims description 14
- 238000012856 packing Methods 0.000 claims description 9
- 238000005086 pumping Methods 0.000 claims description 6
- 230000006378 damage Effects 0.000 claims description 5
- 238000013461 design Methods 0.000 claims description 5
- 238000009792 diffusion process Methods 0.000 claims description 5
- 230000008054 signal transmission Effects 0.000 claims description 3
- 239000011440 grout Substances 0.000 abstract description 6
- 230000008859 change Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 5
- 238000005553 drilling Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 244000144985 peep Species 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008521 reorganization Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D1/00—Sinking shafts
- E21D1/10—Preparation of the ground
- E21D1/16—Preparation of the ground by petrification
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D7/00—Shaft equipment, e.g. timbering within the shaft
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention provides a surface pre-grouting monitoring system of a newly-built coal mine deep vertical shaft under an adjacent existing mineshaft condition. The surface pre-grouting monitoring system comprises a grouting pressure control system which is arranged in a surface pre-grouting pump station at the periphery of the newly-built deep vertical shaft and is used for monitoring a change value of grouting pressure, an automatic water level monitoring system which is arranged in an observation hole between the newly-built deep vertical shaft and an adjacent existing mineshaft and is used for monitoring a water level change value in the observation hole, and a shaft wall pressure relieving system which is arranged on a shaft wall of the mineshaft; and when grout pressure dispersed and transmitted to the shaft wall of the existing mineshaft is higher than a designed outer load value on the shaft wall of the mineshaft, the shaft wall pressure relieving system automatically relieves pressure and is used for preventing the shaft wall of the existing mineshaft from being damaged. The surface pre-grouting monitoring system provided by the invention adopts the protection of three monitoring systems, so that the surface pre-grouting monitoring system of the newly-built coal mine deep vertical shaft under the adjacent existing mineshaft condition is safer and more scientific and reasonable; and the adjacent existing mineshaft can be effectively prevented from being broken by high-pressure grout for grouting, and safety operation of the existing mineshaft is ensured.
Description
Technical field
The present invention relates to a kind of pre-pouring grout monitoring system, and in particular to Newly-built Coal Mine depth under a kind of neighbouring existing wellbore conditions
Vertical pre grouting from the surface monitoring system.
Background technology
In recent years, as production colliery superficial part resource is progressively exhausted, in order to ensure the sustainable development of mine, most mines
In the urgent need to reorganization and expansion with high safety and deep horizontal extension line project, newly-built deep shaft engineering is increasingly such as in surface plant
Increase.Due to multiple pit shafts such as existing main shaft, auxiliary shaft and ventilating shaft in surface plant, deep vertical newly-built in the case will be adjacent to both
There is pit shaft, typically at a distance of 50～150m or so between newly-built deep vertical and existing pit shaft.
In the new depth vertical in colliery is built, grouting and water-proof curtain can be formed around pit shaft using pre grouting from the surface technology
Curtain, so as to shaft construction is greatly lowered during water yield, improve sinking shaft condition and accelerate speed of application.Due in industry
The pit shaft depth of newly-built deep vertical in square, the hydraulic pressure in water-bearing layer is big, and carrying out grouting pressure during pre grouting from the surface will be very high, such
Under big grouting pressure effect, grouting serous fluid will be far along formation fracture migration, when grouting serous fluid runs into neighbouring existing pit shaft
When, high pressure slurries will break the borehole wall of existing pit shaft, and the existing pit shaft of heavy damage, the safety in production to mine causes serious prestige
The side of body.Nowadays at home, existing multiple mine accidents are beaten by pre grouting from the surface is carried out during newly-built pit shaft in surface plant
Bad neighbouring existing pit shaft is so as to initiation.To sum up, Newly-built Coal Mine depth vertical carries out pre grouting from the surface under neighbouring existing wellbore conditions
When, it is necessary to using scientific and rational monitoring system, the high pressure slurries for preventing slip casting break up neighbouring original pit shaft, it is ensured that both
There is pit shaft safe operation.
Therefore, carry out Newly-built Coal Mine depth vertical pre grouting from the surface monitoring system research under neighbouring existing wellbore conditions and have ten
Divide important meaning.
The content of the invention
It is an object of the invention to provide Newly-built Coal Mine depth vertical pre grouting from the surface prison under a kind of neighbouring existing wellbore conditions
Control system, during at least solving to carry out pre grouting from the surface adjacent to the deep vertical of Newly-built Coal Mine under existing wellbore conditions at present, injection
High pressure slurries break up neighbouring existing pit shaft, and to existing pit shaft the problem of serious security incident is caused.
To achieve these goals, the present invention provides following technical scheme：
Newly-built deep vertical pre grouting from the surface monitoring system under a kind of neighbouring existing wellbore conditions, the pre-pouring grout monitoring system
Including：
Grouting pressure control system, the grouting pressure set-up of control system is pre- on the ground of the newly-built deep vertical periphery
In grouting pump station, for monitoring the changing value of grouting pressure；
Water level automatic monitoring system, the water level automatic monitoring system is arranged on the newly-built deep vertical with neighbouring existing well
In peephole between cylinder, for monitoring the SEA LEVEL VARIATION value in the peephole that grouting serous fluid causes；
Borehole wall depressurized system, the borehole wall depressurized system is arranged on the borehole wall of the existing pit shaft；When diffusion is transferred to
When slurry pressure on the existing pit shaft borehole wall exceedes the design external load value on the existing pit shaft borehole wall, the borehole wall release
System destroys automatically unloading for preventing the existing pit shaft borehole wall from meeting with.
The newly-built deep vertical pre grouting from the surface monitoring system under neighbouring existing wellbore conditions as above, it is preferable that described
Grouting pressure control system includes：
Grouting pipeline, for the grouting serous fluid in the pre grouting from the surface pumping plant to be delivered in multiple injected holes；
High pressure cross valve, first connector and the second connector of the high pressure cross valve are provided with the grouting pipeline
Be both connected on the grouting pipeline, and first connector be connected with grouting pump by high-pressure slip-casting flexible pipe, described second
Connector is connected by high-pressure slip-casting flexible pipe with slip casting interface tube.
The newly-built deep vertical pre grouting from the surface monitoring system under neighbouring existing wellbore conditions as above, it is preferable that described
Pressure sensor is installed on the 3rd connector of high pressure cross valve, is provided with the 4th connector of the high pressure cross valve and is unloaded
Pressure valve；
And the pressure sensor and the grouting pump are connected by signal transmssion line with computer, by the computer
Signal that the pressure sensor sends is received, the grouting pump is controlled and whether is worked and control the keying of the pressure-relief valve.
The newly-built deep vertical pre grouting from the surface monitoring system under neighbouring existing wellbore conditions as above, it is preferable that multiple
The injected hole circumferentially arranges the periphery for being centered around the newly-built deep vertical.
The newly-built deep vertical pre grouting from the surface monitoring system under neighbouring existing wellbore conditions as above, it is preferable that described
Peephole is arranged on the middle position between the newly-built deep vertical and neighbouring existing pit shaft.
The newly-built deep vertical pre grouting from the surface monitoring system under neighbouring existing wellbore conditions as above, it is preferable that described
Water level automatic monitoring system is water level automatic monitoring instrument, for monitoring the SEA LEVEL VARIATION in the peephole that grouting serous fluid causes
Situation；The SEA LEVEL VARIATION signal transmission that the water level automatic monitoring instrument sends receives water level to computer by the computer
After variable signal, the instruction for whether stopping slip casting being sent to grouting pump.
The newly-built deep vertical pre grouting from the surface monitoring system under neighbouring existing wellbore conditions as above, it is preferable that just
Pressure relief vent is set on the borehole wall of the neighbouring existing pit shaft of the correspondence newly-built deep vertical, by the borehole wall depressurized system by described
Pressure relief vent is arranged on the inner side of the borehole wall of the existing pit shaft, and the outside of the borehole wall of the existing pit shaft is water-bearing layer.
The newly-built deep vertical pre grouting from the surface monitoring system under neighbouring existing wellbore conditions as above, it is preferable that described
Borehole wall depressurized system includes：
Triple Valve with High Pressure, the first connector connection release steel pipe of the Triple Valve with High Pressure, the release steel pipe passes through institute
The borehole wall for stating existing pit shaft is connected with the pressure relief vent；
High-pressure ball valve, the high-pressure ball valve is connected with the second connector of the Triple Valve with High Pressure；
Automatic relief valve, the automatic relief valve is connected with the 3rd connector of the Triple Valve with High Pressure.
The newly-built deep vertical pre grouting from the surface monitoring system under neighbouring existing wellbore conditions as above, it is preferable that in institute
State and strengthening steel slab is additionally provided with release steel pipe, and the strengthening steel slab is fixed on the borehole wall of existing pit shaft inner side.
The newly-built deep vertical pre grouting from the surface monitoring system under neighbouring existing wellbore conditions as above, it is preferable that in institute
State and packing ring is additionally provided with release steel pipe, the packing ring is located between the strengthening steel slab and the borehole wall of the existing pit shaft；And
The strengthening steel slab is fixed on the borehole wall of the existing pit shaft by Short bolt is fixed, for preventing the release steel pipe by high pressure
Slurries or water under high pressure are ejected.
Compared with immediate prior art, the technical scheme that the present invention is provided has following excellent effect：
The present invention adopts triple monitoring systems of grouting pressure control system, water level automatic monitoring system and borehole wall depressurized system
The protection of system, makes present invention Newly-built Coal Mine depth vertical pre grouting from the surface monitoring system under neighbouring existing wellbore conditions more pacify
Entirely, science and rationally, the high pressure slurries that can effectively prevent slip casting break up neighbouring existing pit shaft, it is ensured that existing pit shaft is transported safely
Battalion.
Description of the drawings
The Figure of description for constituting the part of the application is used for providing a further understanding of the present invention, and the present invention's shows
Meaning property embodiment and its illustrated for explaining the present invention, does not constitute inappropriate limitation of the present invention.Wherein：
Fig. 1 is the grouting pressure control system schematic diagram of the embodiment of the present invention；
Fig. 2 illustrates to arrange water level automatic monitoring system between the newly-built deep vertical and existing pit shaft of the embodiment of the present invention
Figure；
Fig. 3 is the borehole wall depressurized system schematic diagram of the existing pit shaft of the embodiment of the present invention；
Description of reference numerals：1- grouting pressure control systems；11- grouting pumps；12- signal transmssion lines；13- computers；14-
High-pressure slip-casting flexible pipe；15- high pressure cross valves；16- pressure-relief valves；17- pressure sensors；18- slip casting interface tubes；2- water levels are supervised automatically
Control system；21- injected holes；The newly-built deep vertical of 22-；The existing ventilating shaft cylinders of 23-；24- peepholes；The existing main holes of 25-；26- is existing
Auxiliary shaft cylinder；3- borehole wall depressurized systems；31- water-bearing layers；The borehole wall of the existing pit shafts of 32-；33- pressure relief vents；34- release steel pipes；35- consolidates
Determine Short bolt；36- packing rings；37- strengthening steel slabs；38- Triple Valve with High Pressure；39- automatic relief valves；310- high-pressure ball valves.
Specific embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments describing the present invention in detail.It should be noted that in the feelings not conflicted
Under condition, the feature in embodiment and embodiment in the application can be mutually combined.
In describing the invention, term " longitudinal direction ", " horizontal ", " on ", it is D score, "front", "rear", "left", "right", " perpendicular
Directly ", the orientation or position relationship of the instruction such as " level ", " top ", " bottom " is, based on orientation shown in the drawings or position relationship, to be only
For the ease of describing the present invention rather than requiring that the present invention must be with specific azimuth configuration and operation therefore it is not intended that right
The restriction of the present invention.Term " connected " used in the present invention, " connection " should be interpreted broadly, for example, it may be fixedly connected,
Can also be detachably connected；Can be joined directly together, it is also possible to be indirectly connected to by intermediate member, it is common for this area
For technical staff, the concrete meaning of above-mentioned term can be as the case may be understood.
As shown in Figure 1 to Figure 3, a kind of embodiments in accordance with the present invention, there is provided newly-built coal under neighbouring existing wellbore conditions
Ore deposit depth vertical pre grouting from the surface monitoring system, pre-pouring grout monitoring system is controlled by computer 13, and pre-pouring grout monitoring system includes：
Grouting pressure control system 1, grouting pressure control system 1 is arranged on the pre grouting from the surface of the newly-built periphery of deep vertical 22
In pumping plant, for the changing value of precise control grouting pressure；In order to be able to observing the spread condition of grouting serous fluid, further controlling note
The situation of change of slurry pressure, so as to reach the technique effect of the existing pit shaft borehole wall of multiple protective, the present invention is also provided with peephole
24；Water level automatic monitoring system 2, water level automatic monitoring system 2 is arranged between newly-built deep vertical 22 and neighbouring existing pit shaft
In peephole 24, for the SEA LEVEL VARIATION value in monitoring and observation hole 24；In order that the existing pit shaft borehole wall has multiple protective barrier,
The present invention is also provided with borehole wall depressurized system 3, and borehole wall depressurized system 3 is arranged on the borehole wall 32 of existing pit shaft；When diffusion transmission
When slurry pressure to the existing pit shaft borehole wall exceedes the design external load value on the existing pit shaft borehole wall, borehole wall depressurized system 3
By automatically unloading, for preventing the existing pit shaft borehole wall from meeting with destruction.
Grouting pressure control system 1 includes：Grouting pipeline, for the grouting serous fluid in pre grouting from the surface pumping plant to be delivered to
In multiple injected holes 21；High pressure cross valve 15, i.e. high pressure cross valve 15 are provided with grouting pipeline and are arranged on grouting pump 11 with note
At certain position on high-pressure slip-casting flexible pipe 14 between slurry interface tube 18, and in pre grouting from the surface pumping plant；More specifically
The first connector and the second connector for high pressure cross valve 15 is both connected on grouting pipeline, and the first connector passes through high pressure
Slip casting flexible pipe 14 is connected with grouting pump 11, the second connector is connected by high-pressure slip-casting flexible pipe 14 with slip casting interface tube 18.High pressure
Pressure sensor 17 is installed on the 3rd connector of cross valve 15, release is installed on the 4th connector of high pressure cross valve 15
Valve 16；And pressure sensor 17, pressure-relief valve 16 and grouting pump 11 are connected by signal transmssion line 12 with computer 13, by calculating
Whether machine 13 receives the signal that pressure sensor 17 sends, control grouting pump 11 and works and control the keying of pressure-relief valve 16.
Again as shown in Fig. 2 in a particular embodiment of the present invention, multiple injected holes 21 are circumferentially arranged and are centered around newly-built depth
The periphery of vertical 22, for forming grouting and water-proof curtain around the newly-built deep vertical 22, so as to pit shaft is greatly lowered
Water yield in work progress, improve sinking shaft condition and accelerate speed of application.Preferably, injected hole 21 circle footpath be 15～40m (i.e.
The distance between injected hole 21 and newly-built deep vertical 22 are 15～40m)；Preferably, the injected hole 21 in the embodiment of the present invention is excellent
Elect 8 as.In newly-built deep vertical 22, (existing pit shaft includes multiple pit shafts, such as existing main hole 25, existing wind with existing pit shaft
Pit shaft 23 and existing auxiliary shaft cylinder 26) between construction peephole 24 is set, and water level automatic monitoring system is installed in the peep hole 24
2, for the SEA LEVEL VARIATION situation in monitoring and observation hole 24.
In a particular embodiment of the present invention, peephole 24 is arranged on outside grouting and water-proof curtain and has with newly-built deep vertical 22
A certain distance, in order to can just can be to the diffusion feelings of grouting serous fluid before grouting serous fluid diffuses to newly-built deep vertical 22
Condition is detected that Accident prevention occurs；Preferably, peephole 24 is arranged between newly-built deep vertical 22 and neighbouring existing pit shaft
Middle position.
In a particular embodiment of the present invention, water level automatic monitoring system 2 is water level automatic monitoring instrument, and water level is monitored automatically
Instrument is arranged in peephole 24, for the SEA LEVEL VARIATION situation in monitoring and observation hole 24；Specially water level automatic monitoring instrument is used
Wire rope suspensioning, transfer in peephole 24 at the 20m of underwater；The SEA LEVEL VARIATION signal transmission that water level automatic monitoring instrument sends is extremely
On computer 13, received after SEA LEVEL VARIATION signal by computer 13, the instruction for whether stopping slip casting being sent to grouting pump 11.
In a particular embodiment of the present invention, and as shown in figure 3, in the neighbouring existing pit shaft for just corresponding to newly-built deep vertical 22
The borehole wall 32 on arrange pressure relief vent 33, by borehole wall depressurized system 3 by pressure relief vent 33 be arranged on existing pit shaft the borehole wall 32 in
Side, the outside of the borehole wall 32 of existing pit shaft is water-bearing layer 31.
In a particular embodiment of the present invention, borehole wall depressurized system 3 includes：Triple Valve with High Pressure 38, Triple Valve with High Pressure 38
First connector connection release steel pipe 34, release steel pipe 34 is connected through the borehole wall 32 of existing pit shaft with pressure relief vent 33；Smash
Valve 310, high-pressure ball valve 310 is connected with the second connector of Triple Valve with High Pressure 38；Automatic relief valve 39, automatic relief valve 39 and height
The 3rd connector connection of pressure triple valve 38, is capable of achieving automatic pressure-relief function.Strengthening steel slab is additionally provided with release steel pipe 34
37, and strengthening steel slab 37 is fixed on the borehole wall 32 of existing pit shaft inner side.It is further preferred that also setting up on release steel pipe 34
There is packing ring 36, packing ring 36 is located between strengthening steel slab 37 and the borehole wall 32 of existing pit shaft；And packing ring 36 and strengthening steel slab 37 by
Fixed Short bolt 35 is fixed on the borehole wall 32 of existing pit shaft, for preventing release steel pipe 34 by high pressure slurries and water under high pressure top
Go out.Embodiments of the invention arrange packing ring, be in order to prevent press water along pressure relief vent 33, release steel pipe 34 outer side inflow both
Have in pit shaft；Embodiments of the invention arrange the effect of strengthening steel slab 37：Strengthening steel slab is fixed on by fixed Short bolt 35
On the borehole wall 32 of existing pit shaft, release steel pipe 34 is pushed down, after preventing press water from release steel pipe 34 is ejected, cause press water
It is uncontrollable and flood well.In embodiments of the invention when pressure relief vent 33 is constructed, drilling rod is constructed through high-pressure ball valve 310,
After being drilled pressure relief vent 33, drilling rod is transferred to, close the valve of high-pressure ball valve 310, prevent water under high pressure from flowing into pit shaft.
In sum, the present invention adopts grouting pressure control system 1, water level automatic monitoring system 2 and borehole wall depressurized system 3
Triple monitoring systems protection, monitor Newly-built Coal Mine depth vertical pre grouting from the surface under the neighbouring existing wellbore conditions of the present invention
System more science, rationally, the high pressure slurries that can effectively prevent slip casting break up neighbouring original pit shaft, it is ensured that existing pit shaft safety
Operation, it is specific as follows：
As shown in figure 1, the present invention is in order to be able to precise control grouting pressure, prevents slurry pressure excessive and damage by pressure neighbouring existing
Pit shaft, so as to be provided with grouting pressure control system 1.The high-pressure slip-casting connected between grouting pump 11 and slip casting interface tube 18 is soft
High pressure cross valve 15 is provided with pipe 14, and pressure sensor 17 and pressure-relief valve 16, pressure are mounted with high pressure cross valve 15
Sensor 17 is connected with computer 13, the situation of change of monitor in real time grouting pressure value.When grouting pressure value is higher than design load,
Computer 13 will send command signal, and the power-off of grouting pump 11 is given automatically, while automatically opening up pressure-relief valve 16 carries out release, and then
The effect of energy precise control grouting pressure is reached, the pressure-relief valve 16 is, by computer controls, when grouting pump 11 stops slip casting, to unload
Pressure valve 16 can just be opened and carry out automatically unloading.
As shown in Fig. 2 slip casting peephole 24 is set between newly-built deep vertical 22 and neighbouring existing pit shaft, in peephole 24
Water level automatic monitoring instrument is installed, for the SEA LEVEL VARIATION in monitor in real time peephole 24, when grouting serous fluid is expanded by rock crack
When being scattered to peephole 24, water level automatic monitoring instrument shows that water level begins to ramp up, and sends the signal of SEA LEVEL VARIATION to computer 13,
Instruction is sent from computer 13 to grouting pump 11, stops slip casting.
As shown in figure 3, just correspond to the newly-built direction of deep vertical 22, existing pit shaft adjacent to the position of water-bearing layer 31 existing well
Automatic relief valve 39 is installed in drilling on the cylinder borehole wall, when grouting serous fluid diffusion is transferred on the existing pit shaft borehole wall, and grouting serous fluid
Pressure exceed the existing pit shaft borehole wall design external load value when, automatic relief valve 39 automatically opens up release, it is ensured that existing well
The cylinder borehole wall exempts from destruction.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, for those skilled in the art
For member, the present invention can have various modifications and variations.All any modifications within the spirit and principles in the present invention, made,
Equivalent, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. it is a kind of adjacent to newly-built deep vertical pre grouting from the surface monitoring system under existing wellbore conditions, it is characterised in that the pre- note
Slurry monitoring system includes：
Grouting pressure control system, pre grouting from the surface of the grouting pressure set-up of control system in the newly-built deep vertical periphery
In pumping plant, for monitoring the changing value of grouting pressure；
Water level automatic monitoring system, the water level automatic monitoring system be arranged on the newly-built deep vertical and neighbouring existing pit shaft it
Between peephole in, for monitoring the SEA LEVEL VARIATION value in the peephole；
Borehole wall depressurized system, the borehole wall depressurized system is arranged on the borehole wall of the existing pit shaft；Described in being transferred to when diffusion
When slurry pressure on the existing pit shaft borehole wall exceedes the design external load value on the existing pit shaft borehole wall, the borehole wall depressurized system
By automatically unloading, for preventing the existing pit shaft borehole wall from meeting with destruction.
2. as claimed in claim 1 adjacent to newly-built deep vertical pre grouting from the surface monitoring system under existing wellbore conditions, its feature
It is that the grouting pressure control system includes：
Grouting pipeline, for the grouting serous fluid in the pre grouting from the surface pumping plant to be delivered in multiple injected holes；
High pressure cross valve is provided with the grouting pipeline, first connector and the second connector of the high pressure cross valve connect
It is connected on the grouting pipeline, and first connector is connected by high-pressure slip-casting flexible pipe with grouting pump, described second connects
Mouth is connected by high-pressure slip-casting flexible pipe with slip casting interface tube.
3. as claimed in claim 2 adjacent to newly-built deep vertical pre grouting from the surface monitoring system under existing wellbore conditions, its feature
It is that pressure sensor, the 4th connector of the high pressure cross valve are installed on the 3rd connector of the high pressure cross valve
On pressure-relief valve is installed；
And the pressure sensor and the grouting pump are connected by signal transmssion line with computer, are received by the computer
Signal that the pressure sensor sends, control the grouting pump and whether work and control the keying of the pressure-relief valve.
4. as claimed in claim 2 adjacent to newly-built deep vertical pre grouting from the surface monitoring system under existing wellbore conditions, its feature
It is that multiple injected holes circumferentially arrange the periphery for being centered around the newly-built deep vertical.
5. as claimed in claim 1 adjacent to newly-built deep vertical pre grouting from the surface monitoring system under existing wellbore conditions, its feature
It is that the peephole is arranged on the middle position between the newly-built deep vertical and neighbouring existing pit shaft.
6. newly-built deep vertical pre grouting from the surface monitoring system under the neighbouring existing wellbore conditions as described in claim 1 or 5, it is special
Levy and be, the water level automatic monitoring system is water level automatic monitoring instrument, is caused in the peephole for monitoring grouting serous fluid
SEA LEVEL VARIATION situation；The SEA LEVEL VARIATION signal transmission that the water level automatic monitoring instrument sends to computer, by the calculating
Machine is received after SEA LEVEL VARIATION signal, and the instruction for whether stopping slip casting being sent to grouting pump.
7. as claimed in claim 1 adjacent to newly-built deep vertical pre grouting from the surface monitoring system under existing wellbore conditions, its feature
It is pressure relief vent to be set on the borehole wall of neighbouring existing pit shaft for just corresponding to the newly-built deep vertical, by the borehole wall release system
System is arranged on the inner side of the borehole wall of the existing pit shaft by the pressure relief vent, and the outside of the borehole wall of the existing pit shaft is aqueous
Layer.
8. as claimed in claim 7 adjacent to newly-built deep vertical pre grouting from the surface monitoring system under existing wellbore conditions, its feature
It is that the borehole wall depressurized system includes：
Triple Valve with High Pressure, the first connector connection release steel pipe of the Triple Valve with High Pressure, the release steel pipe through it is described both
The borehole wall for having pit shaft is connected with the pressure relief vent；
High-pressure ball valve, the high-pressure ball valve is connected with the second connector of the Triple Valve with High Pressure；
Automatic relief valve, the automatic relief valve is connected with the 3rd connector of the Triple Valve with High Pressure.
9. as claimed in claim 8 adjacent to newly-built deep vertical pre grouting from the surface monitoring system under existing wellbore conditions, its feature
It is that strengthening steel slab is additionally provided with the release steel pipe, and the strengthening steel slab is fixed on the borehole wall of the existing pit shaft
On inner side.
10. as claimed in claim 9 adjacent to newly-built deep vertical pre grouting from the surface monitoring system under existing wellbore conditions, its feature
It is that packing ring is additionally provided with the release steel pipe, the packing ring is located at the well of the strengthening steel slab and the existing pit shaft
Between wall；And the strengthening steel slab is fixed on the borehole wall of the existing pit shaft by Short bolt is fixed, for preventing the release
Steel pipe is ejected by high pressure slurries or water under high pressure.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710113252.9A CN106640090B (en) | 2017-02-28 | 2017-02-28 | Newly-built Coal Mine depth vertical pre grouting from the surface monitoring system under neighbouring existing wellbore conditions |
| PCT/CN2017/117960 WO2018157654A1 (en) | 2017-02-28 | 2017-12-22 | System for monitoring ground pre-grouting of newly-built deep vertical shaft of colliery under the condition of adjacency to existing mineshaft |
| NO20190909A NO345682B1 (en) | 2017-02-28 | 2017-12-22 | System for monitoring ground pre-grouting of newly-built deep vertical shaft of colliery under the condition of adjacency to existing mineshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710113252.9A CN106640090B (en) | 2017-02-28 | 2017-02-28 | Newly-built Coal Mine depth vertical pre grouting from the surface monitoring system under neighbouring existing wellbore conditions |
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| CN (1) | CN106640090B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018157654A1 (en) * | 2017-02-28 | 2018-09-07 | 安徽理工大学 | System for monitoring ground pre-grouting of newly-built deep vertical shaft of colliery under the condition of adjacency to existing mineshaft |
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- 2017-02-28 CN CN201710113252.9A patent/CN106640090B/en active Active
- 2017-12-22 WO PCT/CN2017/117960 patent/WO2018157654A1/en active Application Filing
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Also Published As
| Publication number | Publication date |
|---|---|
| CN106640090B (en) | 2018-01-02 |
| WO2018157654A1 (en) | 2018-09-07 |
| NO345682B1 (en) | 2021-06-14 |
| NO20190909A1 (en) | 2019-07-18 |
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